JR planning - Everything ok?

Hello
I'm planning my trip to japan for this august, and I was wondering if the trains I've chosen are JR accepted. If anyone could please have a look at my intinerary just to check if the trains are ok, i'll really appreciate it.

Here's my planning:

Tokyo - Kyoto

Shinjuku (JR)
JR Chou Line
Tokyo
Shinkanshen Hikari 509
Kyoto

Kyoto - Nara

Kyoto
JR Nara Line
Nara

Nara Osaka

Nara
JR Yamatoji Line
Shinimamiya
JR-NAMBA
Walk
Osaka-Namba

Osaka - Hiroshima

Osaka
JR Special Rapid Service
Shin-Osaka
Shinkansen Sakura 551
Hiroshima

Hiroshima - Tokyo

Hiroshima
Shinkansen Hikari Railstar 546
Shin-Kobe
Shinkansen Hikari 470
Tokyo